Plow.



PATENTED MAY 7, 1907'.

M. D. MAIN.

PLOW. nrmonron mam nu 11,1900.

2 sunk-sum 1.

WITNESSES:

No. 852,843; PLTENTBD' MAY 7,1907,

M. 1). MAIN.-

PLOW. uruoulox' nnnp In n, 1908.

a SHEETS-SHEET z.

operating on flat ground crank-axles separately UNITED STATES PATENT QFFIQEQ MARVIN D. MAIN, OF CORTLAND, NEW YORK, ASSIGNOR or ONE-HALF To LYNN R. LEWIS, OF OORTLAND, NEW YORK. A

PLOW.

Patented May 7, 1907.

Application filed May 11, 1906. Serial No. 316,291.

To all whom, it may concern: I the construction and attachment of which to Be it known that I, MARVIN D. MAIN, a A- constitute the salient feacitizen of the United States, and a resident of ture of my invention, which is as follows, to Cortland, in the county of Cortland, in State of New York, have invented new and I form each of the said useful Improvements in Plows, of which the from a stout round metal following, taken in connection with the accompanying drawings, is a full, clear, and exact description. I

This invention relates to the class of wheelplows which have the plow proper attached 'clined intermediate main portion of the axle. directly to the beam and have the wheels The lower end portion aof the bar conmounted on two separate and independently stitutes thejournal of one of the wheels R, adjustable crank-axles pivotally connected while the upper end portion a of the bar to the beam. forms an arm for mounting the crank-axle on The object of this invention is to connect the beam -A, and when both axles are the crank-axles to the beam in a position thus mounted the arms a -a extending which shall cause the point of the plow to be at obtuse angles from the main portions of carried directly under the attachment of the said axles causes the said main portions to crank-axles and thus allow the plow to be form inclined braces extending from the conveniently and effectually controlled in its wheels to the sides of the beam. These crank-axles are connected to the beam operation and maintain the plow in position to penetrate the ground to the desired depth. by suitable means to maintain the arms -c a of the axles permanently in a line The object also is to provide very strong and compact means for connecting the crossing a vertical line passing through the and independently of plow at a point near the front end thereof, each other and at the same time more sewhich is thus carried under the attachment of the crank-axles and more conveniently curely to the beam and in a manner which shall effectually obviate the liability of inand effectually controlled in its operation and more securely maintained at the required terference with their independent adjustment. And the object furthermore is to depth in the ground.

In order to provide strong and compact simplify the construction and reduce the cost of manufacture of the plow. And to that means for securing the crank-axles to the beam and at the same time render the said end the invention consists in the improved I construction and combination of parts hereaxles free from each other so as to obviate inafter described and illustrated in the acliability of interference with their independcompanying drawings, in which ent adjustment, I provide a bracket D plow emformed with a bottom plate b which may be placed either upon the top of the Figure 1 is a side elevation of a bodying my invention and showing the same beam, -A as shown in Fi s. 1, 2, 3and 4 of the drawings, or on the %)Otl70m of said adjusted for operating on a hill-side Fig. 2 is a perspective view of said plow adjusted for beam as shown in Fig. 5, and is rigidly attached to the beam by suitable means, as

; Fig. 3 is a vertical staples or clips cc embracing the beam section of the attachment of the crank-axles and passing with their ends through holes in to the plow-beam; Fig. 4 is a vertical longitudinal section of the said attachment; and

' the plate b and provided with nuts d for clamping the plate b on the beam.

Fig. 5 is a vertical transverse section of a modification of the aforesaid attachment.

The central portion of the plate bhas projecting from it a tubular hub h A denotes the draft-beam and, B the plow proper which is attached directly to forming pivotal bearings eewhich are in a line crossing a vertical line passing the beam and in line therewith in the usual manner.

RR represent the supporting wheels through the point of the plow. The longitudinal edges of the plate b are formed with vertical semicircular racks y'j axles in one piece bar, the end porwhich are mounted on separate and independently adjustable crank-axles CO,

tions of which I bend at obtuse angles from.

zontally in reverse directions from the insecurely retains which are provided with round apertures "nin range with the bearings e-e and serving as additional bearings for the axle-arms -a -c which are thus seplate --l of the bracket -D- with side extensions r rwhich are grooved longitudinally and receive in their grooves the collars of the levers L-L-*.

curely supported. Said bearings terminate The outer longitudinal flanges -js-sof the in proximity to the sides of the draft-beam to accommodate the inclined main portions of the crank-axles.

In order to secure thev crank-axles independently of each other in their said bearings and maintain said axles free and detached from each other and thus avoid liability of interference with their independent adjustment, 1 dispose the racks at a sufficient distance from the hub -h to form between them suitable recesses for receiving closely fittin collars -Z-l formed on the lower ends 0 the levers L-L, said collars embracing the axle-arms "(Il -0, to which they are screws 00-.

fastened by means of set- The interposition of the between the racks and hub the crank-axles connected to the bracket.

The levers *LL- are provided with the usual dogs -t formed on the lower ends of the spring-actuated rods t for engaging the racks and thereby locking the levers to retain the crank-axles in their desired positions.

By means of the levers -L-L the crank-axles can be adjusted to set the wheels in various positions to either lift the plow from the ground while going to and from the field, or to lower the plow and place it in position to operate on a hill-side or on flat ground.

In case it is desired to connect the crank axles to the underside of the beam as shown in Fig. 5 of the drawings, 1 form the bottom said grooved extensions engage the outer ends of the collars ll hich are fastened to the axle arms said, and thus retain the crank-axles connected to the bracket -D-. 7

It will be observed that in either of the described connections of the crank-axles to the bracket, said axles are free and detached from each other, and each is capable of being turned in its bearings and adjusted without hindrance from the other, which hindrance would be caused in any way connected to each other by a coupling exerting frictional holds on said arms.

What I claim as my invention is 1- In a wheel-plow, the combination with the draft-beam and plow attached directly there to, of crank-axles formed integral with suporting arms extending at obtuse angles Tom the ends of the main portions, a bracket rigidly attached to the draft-beam and formed with pivotal bearings at its center and side edges and terminating in proximity to the sides of the beam, said bearings receiving the axle-arms and supporting the main portions of the axles inclined from the sides of the beam, and levers formed with collars embracing the axle-arms between their bearings and fastened to said axle-arms as set forth and shown.

MARVIN D. MAIN. [n s] Witnesses:

LYNN R. Lnwrs, Orrs D. PATRICK.

if the arms -a c were 

